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Shi JJ, Zhao AT, Peng ZM, Yang LX, Zhou CT. Characterization and visible light photocatalytic activity of cucurbit[ n]urils/CdS-MoS 2. CHINESE J CHEM PHYS 2022. [DOI: 10.1063/1674-0068/cjcp2012214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
In order to reduce the impact of CdS photogenerated electron-hole recombination on its photocatalytic performance, a narrow band gap semiconductor MoS2 and organic macromolecular cucurbit[ n]urils (Q[ n]) were used to modify CdS. Q[ n]/CdS-MoS2 ( n=6, 7, 8) composite photocatalysts were synthesized by hydrothermal method. Infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, ultraviolet-visible and photoluminescence spectrum were used to characterize the structure, morphology and optical properties of the products, and the catalytic degradation of the solutions of methylene blue, rhodamine B and crystal violet by Q[ n]/CdS-MoS2 composite catalyst was investigated. The results showed that the Q[ n] played a regulatory role on the growth and crystallization of CdS-MoS2 particles, Q[ n]/CdS-MoS2 ( n=6, 7, 8) formed flower clusters with petal-like leaves, the flower clusters of petal-like leaves increased the surface area and active sites of the catalyst, the Q[ n]/CdS-MoS2 barrier width decreased, the electron-hole pair separation efficiency was improved in the Q[6]/Cds-MoS2. Q[ n] makes the electron-hole pair to obtain better separation and migration. The Q[6]/CdS-MoS2 and Q[7]/CdS-MoS2 have good photocatalytic activity for methylene blue, and the catalytic process is based on hydroxyl radical principle.
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Affiliation(s)
- Juan-juan Shi
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - An-ting Zhao
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Zhang-mei Peng
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Li-xia Yang
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Chun-tao Zhou
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
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Liang Z, Dong X. Co2P nanosheet cocatalyst-modified Cd0.5Zn0.5S nanoparticles as 2D-0D heterojunction photocatalysts toward high photocatalytic activity. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113081] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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